Diaspore crystals from Massachusetts were, when found, apparently suitable for cutting, and a few gems may have been cut from the Pennsylvania material. However, cut disapore was, at best, an extremely unlikely gemstone until the find of crystals in Turkey. This locality has produced the vast majority of cut diaspore now in existence. Moreover, the locality produced cuttable pieces enormously larger than had ever been known previously in the mineral. Private Collection: some of the larger Turkish stones include: 157.66 (brown, emerald-cut—world's largest): 26.97 (light brown, oval); 10.63 (light brown).